Cooling system Nightmare - MINI Cooper Forum
Go Back   MINI Cooper Forum > Model Specific MINI Forums > MINI Cooper > First Generation MINI Cooper


First Generation MINI Cooper MINI Cooper from 2001 - 2006

Mini2.com is the premier Mini Cooper Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Rate Thread
  #1 (permalink)  
Old Dec 25th, 2012, 11:31 AM
MINI2 Newbie
Offline
 
Join Date: Dec 2012
Posts: 16
Local Time: 07:15 AM
United Kingdom
Cooling system Nightmare

Posted in the tech section aswell as i need help desperately.

2003 Cooper,weeping bottom rad hose about six months ago,repaired and all was well.recently the clutch went and we had a new one put in at our local garage,clutch is good now but,when it came back it overheated and the water had all gone,bottom fitting leaking again.Heater is stone cold and the gauge shoots to the red zone when running.

I have fitted a new rad and new thermostat housing and stat,bled it god knows how many times,also had the heater rad out yesterday,it had old brown water in it so i have cleaned it and blown through the pipes.

Still the same with the system pressurizing and the fan running but heater pipes stone cold and gauge on max.

Help appreciated.
Steve
Reply With Quote
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old Dec 26th, 2012, 08:45 AM
mab01uk's Avatar
MINI2 Master
Offline
 
Join Date: Nov 2006
Location: London
Posts: 5,578
Local Time: 07:15 AM
United Kingdom Male
Is the rad fan working on both speeds.....(I assume you have air con which has the 2-speed fan), 2nd speed is very loud but if lower speed fan resistor has failed engine will tend to overheat before the high speed fan kicks in.

Have you checked the sealing of the engine pressure cap (not expansion tank cap)?

The dash temp gauge is not accurate but their is a way to get the speedo display computer to show actual water temp on the digital display:
This is great for fault diagnosis. You will be able to see the thermostat controlling the temp as you drive and when stationary you can check the fan comes on at low speed at around 106C.
http://www.mini2.com/forum/first-gen...ml#post3828926

Lots of helpful links and cooling system info here:
Solving MINI Cooling Problems.......... - Forums

Other Mini forums to try for help/advice/search:
http://www.totallmini.com/forum/

USA:
http://www.northamericanmotoring.com...lems-issues-9/
Reply With Quote
  #3 (permalink)  
Old Dec 26th, 2012, 09:56 AM
MINI2 Newbie
Offline
 
Join Date: Dec 2012
Posts: 16
Local Time: 07:15 AM
United Kingdom
System pressure cap seems ok,i have tried the original and the new one that came with the thermostat housing.Two speed fan is working as far as i can tell,the coolant gets hot fairly quickly around the right side of the engine around the thermo housing and pipes but the heater pipes remain cold and hot water doesn`t seem to circulate.

I am going to remove the jiggle pin from the new thermostat and investigate the pump,some of the other posts point towards head gasket failure
Steve
Reply With Quote
  #4 (permalink)  
Old Dec 26th, 2012, 03:21 PM
mab01uk's Avatar
MINI2 Master
Offline
 
Join Date: Nov 2006
Location: London
Posts: 5,578
Local Time: 07:15 AM
United Kingdom Male
Head gasket failure due to severe overheating earlier can be detected with a kit which detects the presence of HC exhaust gases leaking into the coolant, while any oil in the coolant should be more obvious.

Are you sure coolant can circulate through that matrix in and out and is not blocked, does not make sense it is remaining cold unless water pump has failed and is not pumping?
Reply With Quote
  #5 (permalink)  
Old Dec 27th, 2012, 06:03 PM
MINI2 Newbie
Offline
 
Join Date: Dec 2012
Posts: 16
Local Time: 07:15 AM
United Kingdom
Sorted at last!

I had an aftermarket thermostat which i tested in some boiling water,nothing-so i bought a genuine one,same problem with cold heater and gauge to the max.

Took the pump off and it seemed very loose,as if the impeller wasn`t turning with the shaft,fitted a new pump and all was well with the system and the heater.

The gauge never moves from normal and the heater is roasting,the fan hasn`t kicked in once as it runs a lot cooler with a new rad and thermostat.
Steve
Reply With Quote
Thanks for this post from:
  #6 (permalink)  
Old Dec 27th, 2012, 07:21 PM
mab01uk's Avatar
MINI2 Master
Offline
 
Join Date: Nov 2006
Location: London
Posts: 5,578
Local Time: 07:15 AM
United Kingdom Male
Thanks for reporting back on the water pump as it helps others in the future.......glad you have fixed it.
Reply With Quote
Sponsored Links
Advertisement
 
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

» Recent Threads
Looking for Mini-experienced mechanic / garage
Today 03:07 AM
Last post by halesowenmum
Today 03:07 AM
0 Replies, 62 Views
De-crudding my paintwork
Jul 12th, 2014 01:35 PM
Last post by halesowenmum
Today 02:37 AM
7 Replies, 580 Views
Visual boot radio
Yesterday 07:51 PM
by jamie w
Last post by Mid Life Mini
Yesterday 10:06 PM
1 Replies, 97 Views
Mini One 2004 COnvertible Window Problem
Nov 24th, 2013 06:08 PM
by bryanuk
Last post by duncanwood
Yesterday 09:38 PM
1 Replies, 613 Views
Convertible roof problem.
Mar 16th, 2006 03:51 PM
Last post by duncanwood
Yesterday 09:25 PM
12 Replies, 30,004 Views
mini connected HELP
Yesterday 06:39 PM
by jamie w
Last post by jamie w
Yesterday 06:39 PM
0 Replies, 136 Views
MINI Cooper 07 R Version
Yesterday 12:17 PM
Last post by SADAMS1980
Yesterday 01:38 PM
2 Replies, 188 Views
2nd hand JCW Sytner Coventry
Jul 16th, 2014 06:38 PM
by LA3195
Last post by LA3195
Yesterday 01:32 PM
6 Replies, 836 Views
Liquid Yellow MINI Cooper poll and showcase! Show your LY MINI pictures here!
Jan 30th, 2005 05:53 AM
Last post by wiesel59
Yesterday 12:10 PM
117 Replies, 48,180 Views
HELP!!! Replacing rear seats.
Jul 26th, 2014 05:14 PM
Last post by Angib
Yesterday 10:05 AM
1 Replies, 250 Views
Jcw question!
Jul 26th, 2014 04:34 PM
by E2J
Last post by The Nun
Yesterday 09:34 AM
3 Replies, 252 Views
Mini loses power and leaves me on the motorway
Yesterday 08:49 AM
Last post by The Nun
Yesterday 09:19 AM
1 Replies, 203 Views
Power Steering Pump DIY
Oct 23rd, 2008 07:22 PM
Last post by Amithlon
Yesterday 09:05 AM
52 Replies, 63,331 Views
Separated harmonic balancer
Yesterday 02:17 AM
Last post by heathwebbo
Yesterday 07:03 AM
1 Replies, 156 Views
Has anybody chipped/re-mapped a petrol countryman one?
Jul 25th, 2014 04:52 PM
Last post by Caveman
Jul 26th, 2014 09:50 PM
2 Replies, 287 Views
R56 Footwell module dead
Jul 15th, 2014 04:19 AM
by miniuy
Last post by miniuy
Jul 26th, 2014 08:52 PM
4 Replies, 722 Views
Need Help Removing Interior Trim On Mini R56
Jul 26th, 2014 03:51 PM
by Quinnn
Last post by Quinnn
Jul 26th, 2014 03:51 PM
0 Replies, 233 Views
Brake servo stopped working!
Jul 26th, 2014 02:32 PM
by Joe 90
Last post by Joe 90
Jul 26th, 2014 02:32 PM
0 Replies, 196 Views
BMW Engined Cooper D fuel consumption?
Feb 20th, 2011 07:12 PM
by dukex
Last post by nigel207
Jul 26th, 2014 02:19 PM
108 Replies, 35,094 Views
Back Up Light stays on
Jul 25th, 2014 05:26 PM
Last post by The Nun
Jul 26th, 2014 12:00 PM
1 Replies, 269 Views
» Premium
» Auto Insurance
Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.1

All times are GMT. The time now is 06:15 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2